Game crashes regularly

Since getting the game installed via Steam I haven't managed to get through much of the game since after a few minutes of playing it usually crashes. I would load it up again, play a few minutes (while doing manual saves frantically) and it would crash again. PC is more than up to spec, running Win10 fully updated, all drivers updated, tried disabling all other non-essential programs with no luck. Local files are verified and tried re-installing as well.

Also noticed that it usually crashes when I'm in looking at the Research screen (although it would also happen without this).

Here's the error message in the latest crash. Save file is attached. 

System.NullReferenceException: Object reference not set to an instance of an object
  at PathFinder.IsSubmerged (System.Int32 cell) [0x00011] in <7b5fa782022149a99d44b48cd9e7c13a>:0 
  at PathFinder.AddPotentials (PathFinder+PotentialScratchPad potential_scratch_pad, PathFinder+PotentialPath potential, System.Int32 cost, System.Int32 underwater_cost, PathFinderAbilities& abilities, PathFinderQuery query, System.Int32 max_links_per_cell, NavGrid+Link[] links, PathFinder+PotentialList potentials, PathGrid path_grid, System.Int32 parent_cell, NavType parent_nav_type) [0x00133] in <7b5fa782022149a99d44b48cd9e7c13a>:0 
  at PathProber.UpdateProbe (NavGrid nav_grid, System.Int32 cell, NavType nav_type, PathFinderAbilities abilities, PathFinder+PotentialPath+Flags flags) [0x00111] in <7b5fa782022149a99d44b48cd9e7c13a>:0 
  at Navigator+PathProbeTask.Run (System.Object sharedData) [0x00016] in <7b5fa782022149a99d44b48cd9e7c13a>:0 
  at WorkItemCollection`2[WorkItemType,SharedDataType].InternalDoWorkItem (System.Int32 work_item_idx) [0x0000d] in <2b62282b98e74183b88777eeac42c29a>:0 
  at JobManager.DoNextWorkItem () [0x0001a] in <2b62282b98e74183b88777eeac42c29a>:0 
  at JobManager+WorkerThread.Run () [0x0001e] in <2b62282b98e74183b88777eeac42c29a>:0 

  at UnityEngine.Debug.LogError (System.Object message) [0x00000] in <b8388ffefd6046f8a7b4080349da72eb>:0 
  at Debug.LogError (System.Object obj) [0x00000] in <2b62282b98e74183b88777eeac42c29a>:0 
  at JobManager+WorkerThread.PrintExceptions () [0x00000] in <2b62282b98e74183b88777eeac42c29a>:0 
  at JobManager.Run (IWorkItemCollection work_items) [0x00000] in <2b62282b98e74183b88777eeac42c29a>:0 
  at GlobalJobManager.Run (IWorkItemCollection work_items) [0x00000] in <2b62282b98e74183b88777eeac42c29a>:0 
  at BrainScheduler+BrainGroup.AsyncPathProbe () [0x00000] in <7b5fa782022149a99d44b48cd9e7c13a>:0 
  at BrainScheduler+BrainGroup.RenderEveryTick (System.Single dt, System.Boolean isAsyncPathProbeEnabled) [0x00000] in <7b5fa782022149a99d44b48cd9e7c13a>:0 
  at BrainScheduler.RenderEveryTick (System.Single dt) [0x00000] in <7b5fa782022149a99d44b48cd9e7c13a>:0 
  at SimAndRenderScheduler+RenderEveryTickUpdater.Update (IRenderEveryTick updater, System.Single dt) [0x00000] in <2b62282b98e74183b88777eeac42c29a>:0 
  at UpdateBucketWithUpdater`1[DataType].Update (System.Single dt) [0x00000] in <2b62282b98e74183b88777eeac42c29a>:0 
  at StateMachineUpdater+BucketGroup.AdvanceOneSubTick (System.Single dt) [0x00000] in <2b62282b98e74183b88777eeac42c29a>:0 
  at StateMachineUpdater.RenderEveryTick (System.Single dt) [0x00000] in <2b62282b98e74183b88777eeac42c29a>:0 
  at Game.LateUpdate () [0x00000] in <7b5fa782022149a99d44b48cd9e7c13a>:0 

The Space Abyss.sav